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Title: Solar wind and substorm excitation of the wavy current sheet
Authors: Forsyth, C.
Lester, M.
Fear, R.C.
Lucek, E.
Dandouras, I.
Fazakerley, A.N.
Singer, H.
Yeoman, Tim K.
First Published: 19-Jun-2009
Publisher: Copernicus Publications on behalf of the European Geosciences Union (EGU)
Citation: Annales Geophysicae, 2009, 27 (6), pp. 2457-2474.
Abstract: Following a solar wind pressure pulse on 3 August 2001, GOES 8, GOES 10, Cluster and Polar observed dipolarizations of the magnetic field, accompanied by an eastward expansion of the aurora observed by IMAGE, indicating the occurrence of two substorms. Prior to the first substorm, the motion of the plasma sheet with respect to Cluster was in the ZGSM direction. Observations following the substorms show the occurrence of current sheet waves moving predominantly in the −YGSM direction. Following the second substorm, the current sheet waves caused multiple current sheet crossings of the Cluster spacecraft, previously studied by Zhang et al. (2002). We further this study to show that the velocity of the current sheet waves was similar to the expansion velocity of the substorm aurora and the expansion of the dipolarization regions in the magnetotail. Furthermore, we compare these results with the current sheet wave models of Golovchanskaya and Maltsev (2005) and Erkaev et al. (2008). We find that the Erkaev et al. (2008) model gives the best fit to the observations.
ISSN: 0992-7689
Type: Article
Description: This paper was published as Annales Geophysicae, 2009, 27 (6), pp. 2457-2474. It is also available from Doi: 10.5194/angeo-27-2457-2009
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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